fix: support avoid support model overlaps introduced by horizontal expansion for bottom stair stepping (CURA-3380)
fix: support avoid support model overlaps introduced by horizontal expansion for bottom stair stepping (CURA-3380)

ROBO3D/CuraEngine,alephobjects/CuraEngine,ROBO3D/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,alephobjects/CuraEngine,Ultimaker/CuraEngine,ROBO3D/CuraEngine